Reports of at least 30 dead fromTibetan exile groups.
Sun Weide, a spokesman for the Beijing Olympics organizing committee, said the unrest would not have a negative impact on the Games or the torch relay.
Preparations to carry the Olympic torch across Mount Everest and across Tibet "have been proceeding very smoothly and according to schedule," Sun said.
"The hosting of the Beijing Games is the 100-year dream for Chinese people and I think the Chinese people, including our compatriots in Tibet, very much look forward to hosting the Games," Sun said.
The United States and other governments have urged China to show restraint on the protesters, though International Olympic Committee President Jacques Rogge deferred, saying he didn't have details.